garimella
Full Member level 5
I was reading a book on power electronics by Daniel Hart and the topic was on energy recovery. There are two circuits under analysis. Circuit 1 is a typical configuration shown below. When the transistor is off, the power is entirely dissipated in resistor. The author claims that Circuit 2 is more efficient because when the transistors are off, the entire current is returned back to source. My question is ,
1. why should we add resistor in circuit-1. Will it not return the current back to source, when the transistor is off, just through diode?
2. In circuit 2 , why two diodes are required, will it not work with one diode?
Circuit1
Circuit2: Courtesey : Daniel.W Hart
1. why should we add resistor in circuit-1. Will it not return the current back to source, when the transistor is off, just through diode?
2. In circuit 2 , why two diodes are required, will it not work with one diode?
Circuit1
Circuit2: Courtesey : Daniel.W Hart